Promotional Bundle Message Near Add to Cart Boosts Mobile Engagement and Orders

A bundle promo message near Add to Cart boosted engagement metrics but AOV dropped -7.9% and RPV fell -11.4%, failing to drive intended upsell behavior.

Metric

Average order value

Lift change

-7.9%

Promotional Bundle Message Near Add to Cart Boosts Mobile Engagement and Orders – Control screenshot

Control

Promotional Bundle Message Near Add to Cart Boosts Mobile Engagement and Orders – Variation screenshot

Variation

IF we surface the "Buy 3 Sleeves, get off" bundle offer directly near the Add to Cart button, THEN average order value will increase, BECAUSE users will be more likely to see and act on the upsell offer when it's displayed at the key purchase decision point.

A promotional message about the bundle deal ("Buy 3 Sleeves, get off") was added near the Add to Cart button on the product page. The message was positioned as purely informational and non-interactive, designed to raise awareness of the offer at the purchase decision point.

Detailed breakdown

Add-to-Cart Rate

+7.0%

Average Order Value

-7.9%

Click-through Rate

+5.5%

Conversion Rate

-1.9%

Revenue Per Visitor

-11.4%

Bounce Rate

-11.3%

The bundle promo message near Add to Cart boosted engagement—add-to-cart rate rose +7.0%, CTR +5.5%, and bounce rate dropped -11.3%—but failed to lift AOV, which fell -7.9%. RPV declined -11.4%, meaning the promo message caught attention but didn't convert into higher-value orders. Users may have been drawn to the deal but found the offer unclear or not compelling enough to add more items. The placement increased awareness without driving the intended upsell behavior.